Black and Decker Blender Jar Lid Insert 178253-00 MEASURING CUP BL5000/5900I Works with the following models: Black & Decker BL1900, Black & Decker BL1900R Black & Decker BL2900, Black & Decker BL3900, Black & Decker BL3900SKT, Black & Decker BL4900